User's Manual

Press 【FN】for 2 seconds,
system will change between
customized settings and flash
modes, enter custom mode,
press 【↑】/【↓】to select
options, press 【←】/【→】
to set option number.
Wireless channel setting
11 12
Custom function/FN
PS: The option of Fn number 1-3 can be set by Canon's online status by accessing the "External flash's custom function settings" in the camera menu.
Custom function
serial number
Functions
Status setting Instruction
Flash surrounding exposure automatically cancel
Enable
Flash surround exposure order Automatical focusing assist
Disable